/Engine/Source/Editor/UnrealEd/Classes/Editor/EditorEngine.h
Converts passed in brushes into a single static mesh actor. Note: This replaces all the brushes with a single actor. This actor will not be attached to anything unless a single brush was converted.
Returns the newly created actor with the newly created static mesh.
[AActor](API\Runtime\Engine\GameFramework\AActor) * ConvertBrushesToStaticMesh ( const [FString](API\Runtime\Core\Containers\FString) & InStaticMeshPackageName, [TArray](API\Runtime\Core\Containers\TArray)< [ABrush](API\Runtime\Engine\Engine\ABrush) * > & InBrushesToConvert, const FVector & InPivotLocation )